   (s/keys
    :req-un [::transformation.to-uppercase/args
             ::transformation.engine.s/onError
-            ::transformation.engine.s/op]))
+            ::transformation.engine.s/op]
+   :opt-un [::transformation.engine.s/created]))
 
 (create-ns  'akvo.lumen.specs.transformation.to-titlecase)
 (alias 'transformation.to-titlecase 'akvo.lumen.specs.transformation.to-titlecase)

  (s/keys
   :req-un [::transformation.to-lowercase/args
            ::transformation.engine.s/onError
            ::transformation.engine.s/op]))

(create-ns  'akvo.lumen.specs.transformation.to-uppercase)
(alias 'transformation.to-uppercase 'akvo.lumen.specs.transformation.to-uppercase)

(s/def ::transformation.delete-column/args
  (s/keys :req-un [::db.dsv.column.s/columnName]))


(s/def ::transformation.delete-column/args
  (s/keys :req-un [::db.dsv.column.s/columnName]))


(defmethod op-spec "core/delete-column"  [_]
  (s/keys
   :req-un [::transformation.delete-column/args
            ::transformation.engine.s/onError
            ::transformation.engine.s/op]
   :opt-un [::transformation.engine.s/created]))


(create-ns  'akvo.lumen.specs.transformation.change-datatype)
